Mechanical movement.



V. KUBLBR.

MECHANICAL MOVEMENT.

APPLICATION FILED Amm, 191a.

Patented Aug. 18, 1914.

2 SHEETS-SHEET 1.

us axi t Wall V. KOBLEB.

MECHANICAL MOVEMENT.

APPLIOATION FILED APILI, 191a.

Patented Aug. 18, 1914.

2 SHEETS-SHEET 2.

THE NORRIS PETERS 60.. PHOTD-LITHO., WASHING run. a 4:4

El STATfi PATENT QFFTCE.

VICTOR KOBLER, OF IRORSGHACH, SWITZERLAND, ASSIGNOR TO THE FIRM OF ADOLPH SAURER, OF ARBON, SWITZERLAND.

MECHANICAL MOVEMENT.

To all whom it may concern:

Be it known that I, VICTOR Konnnn, a citizen of the Republic of Switzerland, residing at Rorschach, Switzerland, have invented new and useful Improvements in Mechanical Movements; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings,

and to letters or figures of reference marked thereon, which form a part of this specification.

In embroidery machines it is necessary, after the main driving gear of the machine has been stopped, to impart a temporary reciprocatory motion to the gear for operating the devices which act upon the embroidering threads, such as the embroidering needles, the shuttles, the thread guides, and the thread brake, for the purpose of facilitating withdrawal of the threads, that is to say, of slacking the same. This, for instance, is requisite when perforating is to be done after embroidering, as the perforators are lower than the needles, so that the fabric, on each side of which are the taut needle and shuttle threads respectively, has to be shifted. In those embroidery machines in which a-pantograph is used, this slacking of the threads is performed through to and fro motion of the embroidery machine driving gear by hand.

The present invention resides in means whereby the thread slacking can be effected mechanically in automatic embroidery machines. According to this invention the operation of disengaging the driving gear of the embroidery machine, which is performed automatically by the jacquard card, throws into engagement means which impart to the embroidery machine driving gear the reciprocatory motion for the purpose of slacking the threads. This, for example, can be etfected in such manner that on disengagement by the jacquard mechanism of aclutch which couples the machine driving gear with the main driving gear, that part of the clutch which remains in connection with the embroidery Specification of Letters Patent.

Application filed April 1, 1913.

Patented A11 18, 1914;. Serial No. 758,106.

machine driving gear becomes coupled with i in which machine parts unnecessary for a clear" understanding of the invention have been omitted.

Figure 1 is a view in end elevation and part section of the jacquard embroidery machine to which the invention is applied. Fig. 2 is a view in front GlBWttlOll partly in section of the mechanism shown in Fig. 1..

Fig. 3 is a sectional view showing the clutch mechanism and cooperating parts in a different position. Fig. at is a cross sectional view of certain parts which are partly obscured in Fig. 2. Fig. 5 shows a portion of the jacquard mechanism in plan. Fig. 6 is anelevation of certain mechanisms shown in Fig.- 1, drawn in another position.

1 is the main shaft, which receives its motion from the belt 2, which motion is transmitted to another shaft 6 by means of sprocket wheels, 3, 5 and a chain 4:. Mounted on the shaft 6 is a crank disk 7, whose pin 8 carries a sliding block which engages in the slot 9 of a lever 10 fixedly mounted on a shaft 11. This shaft 11 also has secured to it an arm 12, in which there is located a slidable pin 13, controlled by a spring 14. ()n the shaft 6 there is fixedly mounted a friction bevel wheel or male clutch member 15, which in conjunction with a second friction bevel wheel or female clutch member 16 constitutes a clutch. The wheel 16 is slidably mounted on the shaft 6, and is forced toward the wheel 15 by a spring 17. Integral with the wheel 16 is a grooved boss or hublS, which is embraced by a fork 19, rigidly connected with a pivotal lever 20, which is connected by a rod 21 with one arm of a bent lever 22, secured to an auxiliary shaft 23. Jointed to the lever 22 is a crank rod 22, whose crank is mounted on a shaft 25 of the so-called automatic or jacquard mechanism A (Figs. 2 and 5).

This shaft 25 can be partially rotated by the continuously revolving gear Wheel 27, on a pinion 26 being slidden into engagement with the wheel 27. This engagement is effected, according to the pattern in use, by meansof the automatic mechanism A, with the aid of a lever 28, which in familiar manner makes a short to and fro movement, depending upon the position of the jacquard needles 29, which are set in well-known manner by the perforated jacquard cards. Thus by means of the automatic mechanism A the boss 18 can be slid on the shaft 6 and the clutch parts 15, 16 hence thrown into or out of engagement. The outer periphery of the clutch member 16 is provided with teeth 30, which constantly mesh with a toothed wheel 31, no matter whether the clutch parts 15, 16 are engaged ordisengaged.

The wheel 31 is secured to the embroidery machine shaft 32, on which there is also mounted a cam 33 to the side of which a cam plate 34: is secured. To the auxiliary shaft 23 there is fixed a lever 35, which is connected by a rod 36 with a lever 37, which extends from a collar 38, loosely embracing a pin 39, projecting from a rod 40. This rod 40 terminates in a fork l1 (Figs. 1, 2 and; 7), having a pin 42 on which there is mounted a rotatable and axially slidable roller 13. From the collar 38 there extends also a fork n, which, engages the roller 43, so that by sliding the hub 18 the roller 43 can be pushed. either into engagement with the cam 33 or with the cam plate 3%. The rod 10 is jointed to curved levers 45, which are mounted on shafts 46, on' which are also mounted the major thread looseners a7, over which there pass the taut embroidering threads 51, coming from the bobbins $8 and running over the brake rollers 49 and minor thread looseners 50, and threaded through the embroidering needles 52 and cooperating with the embroi'dering threads on the other side of the fabric 53, which come from the shuttles (not shown) reciprocating in inclined direction.

The mode of operation is as follows. Supposing the jacquard needles 29 to be so set by the jacquard card that the shaft 25 is turned through a short distance, the rod 22 will move the rod 21 and thus cause the hub 18 to be slid from the position shown in Fig. 1 into that shown in Fig. 3. The friction clutch will thus be thrown out, so that the wheel 16 is no longer rotated by the wheel 15. It will, however, continue to turn, owing to its kinetic energy, and on its following rotation the pin 13 will snap into a hole 54. in the wheel 18 and thus couple the latter with the shaft 11. The result of this is, that the friction wheel 16 will be oscillated by the shaft 11 and the motion will be imparted by the gears 30, 31 to the shaft 32 and cams 33, 34-. On sliding of the hub 18,

however, the fork 4% will have been vibrated by means of the lever system 35, 36, 37, and

thus the roller -13 pushed from the cam 33 onto the cam 34. It is obvious that the roc ing of the shaft 32 will thus cause vibration of the major thread looseners a7, as indicated by positions 00 and y in Fig. 6, whereby the embroidering threads 51 will be loosened'.

I claim:

1. In a jacquard embroidery machine, in

: combination, a main driving shaft, a driving shaft for the machme, and a tlnrd shaft, and means for rockmg the latter from the main shaft, means for coupling the first two said shafts comprising a clutch the one member of which is axially slidable and in the one end position effects coupling of the main driving shaft with the machine driving shaft, and in the other end position effects coupling of the machine driving shaft withthe said third shaft.

2. In a jacquard embroidery machine, in combination, a continuously rotating clutch member, a coeperating clutch member, a member having a reciprocatory motion, and means to effect disengagement of the cooperating clutch member from the continuously rotating clutch member and engagement thereof with the reciprocating member.

3. In a jacquard embroidery machine, in combination, a continuously rotating shaft, a clutch member mounted thereon, a coperating clutch member loosely mounted on the shaft, a member having a reciprocatory motion and means to effect disengagement of the second clutch member from. the first clutch member and engagement thereof with the reciprocating member.

at. In a jacquard embroidery machine, in combination, a continuously rotating shaft, a clutch member mounted thereon, a cooperating clutchmember loosely mounted on the shaft, a member having a reciprocatory motion, means to effect disengagement of the second clutch member from the first clutch member and engagement thereof with the reciprocating member, and a machine driving shaft operatively connected with the second. clutch member.

5. In a acquard embroidery machine, in combination, a continuously rotating shaft, a clutch member mounted thereon, a cooperating clutch member loosely mounted on the shaft, a member having a reciprocatory motion, means to effect disengagement of the second clutch member from the first clutch member and engagement thereof with the reciprocating member, and operative means between said shaft and the reciprocating member for reciprocating the latter.

6. In a acquard embroidery machine, in

combination, a driving shaft for the mechanism to be controlled, means to impart to sald shaft a movement of contlnuous rotation, means to impart to said shaft a moveas my invention, I have signed my name in ment 3f fisiillation, two cams slide by sidg presence of two subscribing Witnesses. on sai s a t transmittin mec anism an means to effect operative relation between VICTOR KOBLER 5 the transmitting mechanism and one or the Witnesses:

other of said cams. JAKOB NUSSBERGER,

In testimony that I claim the foregoing RANDALL ATKINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

